diff --git a/src/ai_typewriter/key_stepper.py b/src/ai_typewriter/key_stepper.py
index 4ad69b5..f272047 100644
--- a/src/ai_typewriter/key_stepper.py
+++ b/src/ai_typewriter/key_stepper.py
@@ -2,63 +2,47 @@ from __future__ import annotations
 
 from dataclasses import dataclass, field
 from threading import Lock
-from typing import Optional, Sequence
+from typing import Optional
 
 import keyboard
 
 
-@dataclass(frozen=True)
-class TypeAction:
-    kind: str
-    value: str
-
-
 @dataclass
 class KeyStepper:
-    text: str | Sequence[TypeAction]
+    text: str
     delay: float = 0.0
     _index: int = 0
     _hook: Optional[object] = None
     _lock: Lock = field(default_factory=Lock)
     _injecting: bool = False
-    _actions: list[TypeAction] = field(init=False)
-
-    def __post_init__(self) -> None:
-        if isinstance(self.text, str):
-            self._actions = [TypeAction("text", char) for char in self.text]
-        else:
-            self._actions = list(self.text)
 
     def start(self) -> None:
-        if not self._actions:
+        if not self.text:
             return
         if self._hook is not None:
             return
-        self.type_next_character()
-        if self._index >= len(self._actions):
-            return
-        # suppress=True blocks the physical key while the callback types the next AI character/action.
+        # suppress=True blocks the physical key while the callback types the next AI character.
         self._hook = keyboard.hook(self._on_event, suppress=True)
 
     @property
     def remaining_characters(self) -> int:
-        return max(len(self._actions) - self._index, 0)
+        return max(len(self.text) - self._index, 0)
 
     def type_next_character(self) -> None:
         with self._lock:
-            if self._index >= len(self._actions):
+            if self._index >= len(self.text):
                 self.stop()
                 return
-            action = self._actions[self._index]
+            char = self.text[self._index]
             self._index += 1
 
         self._injecting = True
         try:
-            self._type_action(action)
+            self._type_char(char)
         finally:
             self._injecting = False
 
-        if self._index >= len(self._actions):
+        if self._index >= len(self.text):
             self.stop()
 
     def stop(self) -> None:
@@ -72,20 +56,6 @@ class KeyStepper:
             return
         self.type_next_character()
 
-    def _type_action(self, action: TypeAction) -> None:
-        if action.kind == "equation":
-            self._type_word_equation(action.value)
-            return
-        for char in action.value:
-            self._type_char(char)
-
-    def _type_word_equation(self, expression: str) -> None:
-        keyboard.send("alt+=")
-        keyboard.write(expression, delay=self.delay, exact=True)
-        # Word converts much of UnicodeMath after Space; Right exits the equation object.
-        keyboard.send("space")
-        keyboard.send("right")
-
     def _type_char(self, char: str) -> None:
         if char == "\n":
             keyboard.send("enter")